3. Jeff Gordon pulls elaborate prank on skeptical journalist. Considering that journalists earn a living by doubting what others accept as fact, it's understandable that automotive reporter Travis Okulski had reservations about Pepsi Max's commercial with Jeff Gordon. Okulski was adamant it was a fake. But after Gordon took him for a surprise test drive, Okulski is officially a believer.

5. The many different doughnuts of Mardi Gras. Fat Tuesday is nearly upon us, and that means it's as good a time as any to delve deeper into the world of doughnuts. NPR reports that the sugary breakfast treat originated in the medieval era as a way to splurge before Lent. And now you know.